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Estimates of gravity wave momentum fluxes in the winter and summer high mesosphere over northern Scandinavia
Institution:1. School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;2. Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China;1. Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kerala 690 525, India;2. Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India;1. Department of Cognitive and Psychological Sciences, Graduate School of Informatics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan;2. Center for Development of Advanced Medical Technology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan;3. Department of Pediatrics, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan;4. Global Research Institute, Keio University, 2-15-45 Mita, Minato-ku, Tokyo, 108-8345, Japan;5. Japan Society for Promotion Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo, 102-0083, Japan;1. Allergy & Immunology Service, Walter Reed National Military Medical Center, Bethesda, MD;2. Department of Medicine, Uniformed Services University, Bethesda, MD;3. Department of Laboratory Medicine, Hematology Section, National Institutes of Health, Bethesda, MD;4. Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD;5. Allergy & Immunology Service, Eglin Air Force Base, FL;6. Department of Pathology, Hematopathology Service, Walter Reed National Military Medical Center, Bethesda, MD;7. Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
Abstract:As part of the MAP/WINE campaign (winter 1983–1984) and the MAC/SINE campaign (summer 1987) high resolution wind profiles were obtained in the upper mesosphere using the foil cloud technique. Vertical winds were derived from the fall rate of the foil clouds and are used for estimating the momentum fluxes associated with vertical wavelengths shorter than about 10 km. From the ensemble average of 15 observations over an altitude range of 74–89 km we calculate a zonal net momentum flux of +12.6 ± 4.5 m2s?2 in summer. The average of 14 measurements in winter between 73 and 85 km indicates a zonal net momentum flux of ?3.7 ± 2.4 m22 s?2.
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